Case Study: Mack Weldon achieves a mobile-first, conversion-boosting direct-to-consumer shopping experience with Spree Commerce

Mack Weldon reinvents men's basic with Spree, smart design, performance fabrics, and super easy shopping experience

Mack Weldon is a New York–founded direct‑to‑consumer brand that reinvented men’s basics by focusing on non‑seasonal essentials with performance fabrics and smart design. To scale digitally and build direct relationships with customers, the company needed a fast, mobile‑first shopping experience and data‑driven marketing to boost conversion and lifetime value.

Mack Weldon built a single‑page app on the Spree eCommerce platform (mobile‑first Rails/Spree with Backbone) and added features like the Weldon Blue loyalty/try‑on program, self‑served exchanges, a CMS, and an upgraded checkout plus key integrations. The result: rapid growth to 250,000 customers (adding ~10,000/month), over 1 million units sold, conversion improvements of up to 5x on tested pages, and status as a leading online‑only men’s basics brand.

Mack Weldon

Bran Berger

CEO and Founder